package com.common.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
/**
 * spring容器工具类
 * @ClassName: SpringContextUtil 
 */
@Component
public class SpringContextUtil implements ApplicationContextAware{

	private static ApplicationContext applicationContext; // Spring应用上下文环境
    /*
     * 实现了ApplicationContextAware 接口，必须实现该方法；
     *通过传递applicationContext参数初始化成员变量applicationContext
     */
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    	SpringContextUtil.applicationContext = applicationContext;
    }

    public static ApplicationContext getApplicationContext() {
    	return applicationContext;
    }

	@SuppressWarnings("unchecked")
	public static <T> T getBean(String name) throws BeansException {
		return (T) applicationContext.getBean(name);
	}

}
